121C4MA/BL
View detailed technical data, stock status, and sourcing information for: 121C4MA/BL
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An item designed to be attached in place of the mounting bushing nut and/or attached to the chassis or panel for a volume control, a variable capacitor or the like to permit locking the shaft in a fixed position.
0.427 inches maximum distance from hole center to knob/skirt base, 0.750 inches minimum counterbore diameter, 2 setscrew hole quantity, 0.250 inches minimum counterbore depth, 0.252 inches minimum and 0.254 inches maximum inside diameter
Product Characteristics
Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.
- Inside Diameter
- 0.252 inches minimum and 0.254 inches maximum
- Counterbore Diameter
- 0.750 inches minimum
- Counterbore Depth
- 0.250 inches minimum
- Setscrew Hole Quantity
- 2
- Distance From Hole Center To Knob/Skirt Base
- 0.427 inches maximum
- Overall Depth
- 0.605 inches minimum
- Gripping Surface Condition
- grip aid
- Shaft Accommodation Style
- counterbored
- Outside Diameter
- 1.240 inches minimum and 1.280 inches maximum
- Skirt Style
- flared
- Reference Marking
- arrow
- Attachment Method
- setscrews
- Overall Thickness
- 0.820 inches minimum and 0.880 inches maximum
- Material Transparency
- opaque
- Screw Drive Type
- hexagon socket
- Thread Quantity Per Inch
- 32 screw hole
- Nominal Thread Size
- 0.164 inches screw hole
- Skirt Outside Diameter
- 1.837 inches maximum
- Skirt Design
- nondetachable
- Style Designator
- round
- Thread Series Designator
- unc screw hole
- Specification/Standard Data
- 96906-ms91528 government standard
Replaces National Stock Numbers
Below is a list of NSNs that have been officially superseded by this NSN:
| NSN | Name | Date |
|---|---|---|
| 5355-00-436-3439 | No Name Available | 09/01/1980 |
| 5355-00-626-3597 | No Name Available | 01/01/1963 |
| 5355-00-680-8224 | No Name Available | 01/01/1963 |
| 5355-00-803-9074 | No Name Available | 01/01/1962 |
Related Parts
This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:
| Part Number | Name |
|---|---|
| 121C4MA/BL | Knob |
| 125-3BL-2G | Knob |
| 125-3BL2G | Knob |
| 125-3BLWL-2G | Knob |
| 222730-303 | Knob |
| 231-1059G39 | Knob |
| 512-3BL-2M | Knob |
| KMS12F2L | Knob |
| MS91528-302B | Knob |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5355-00-577-4106?
Does the NSN 5355-00-577-4106 have a Schedule B code assigned?
Does NSN 5355-00-577-4106 require demilitarization?
Does NSN 5355-00-577-4106 contain precious materials?
Does NSN 5355-00-577-4106 contain hazardous materials?
When the NSN 5355-00-577-4106 was assigned to the Federal Catalog?
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Pricing
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